#include <iostream>
#include <string>
#include <vector>
#include <unordered_map>
#include <functional>

struct PrefixObject;

struct Asset {
    enum Type : int {
        TEXTURE, DERP, BURP, FURP, NONE
    };
};

std::unordered_map<Asset::Type, std::vector<std::string>, std::hash<int>> global_pref;
std::unordered_map<Asset::Type, std::vector<std::string>, std::hash<int>> global_post;

struct PrefixObject {
    std::vector<std::string> pref;

    PrefixObject operator | (const PrefixObject& other) {
        PrefixObject o;
        for (std::string& s : pref)
            o.pref.push_back(s);
        for (const std::string& s : other.pref)
            o.pref.push_back(s);
        return o;
    }

    Asset::Type operator >> (const Asset::Type& other) {
        for (std::string& s : pref)
            global_pref[other].push_back(s);
        return other;
    }
};

Asset::Type operator << (const Asset::Type& t, const PrefixObject& other) {
    for (const std::string& s : other.pref)
            global_post[t].push_back(s);
    return t;
}

PrefixObject operator "" _p(const char* s, unsigned int size) {
    return {{std::string(s)}};
}

int main() {
    ("images/"_p | "textures/"_p) >> Asset::TEXTURE << (".png"_p | ".jpg"_p | ".dds"_p | ".bmp"_p);

    for (std::string& d : global_pref[Asset::TEXTURE])
        std::cout << d << std::endl;
    std::cout << "--------------------" << std::endl;
    for (std::string& d : global_post[Asset::TEXTURE])
        std::cout << d << std::endl;

    return 0;
}